| 纳米SiO2的制备及性能研究 |
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| 引用本文： | 李茂琼,项金钟,胡永茂,方静华,陈光学,张桂琴,吴兴惠.纳米SiO2的制备及性能研究[J].云南大学学报(自然科学版),2002,24(6):445-448. |
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| 作者姓名： | 李茂琼 项金钟 胡永茂 方静华 陈光学 张桂琴 吴兴惠 |
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| 作者单位： | 云南大学材料科学与工程系,云南,昆明,650091 |
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| 基金项目： | 云南省自然科学基金重点项目 (2 0 0 1E0 0 0 3Z) |
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| 摘 要： | 用溶胶—凝胶法制备了纳米SiO2,考察了溶胶的浓度和pH值对凝胶时间的影响,并用FT-IR,XRD和TEM研究了其在热处理过程中的物相及显微结构.结果表明:溶胶浓度和溶胶pH值对凝胶时间影响较大.在温度为600℃时,经过烧结晶化,可制得纳米二氧化硅,其平均粒径20nm,外观形状呈球形,且热稳定性良好.
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| 关 键 词： | 溶胶-凝胶法 纳米SiO2 正硅酸乙酯(Si(OC2H5)4) |
| 文章编号： | 0258-7971(2002)06-0445-04 |
| 修稿时间： | 2002年6月20日 |
Synthesis and characterization of Nanoscale- SiO2 |
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| LI Mao qiong,XIANG Jin zhong,HU Yong mao,FANG Jing hua,CHEN Gaung xue,ZHANG Gui qin,WU Xing hui.Synthesis and characterization of Nanoscale- SiO2[J].Journal of Yunnan University(Natural Sciences),2002,24(6):445-448. |
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| Authors: | LI Mao qiong XIANG Jin zhong HU Yong mao FANG Jing hua CHEN Gaung xue ZHANG Gui qin WU Xing hui |
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| Institution: | The Material Science and Engineering Department of Yunnan University, Kunming 650091, China |
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| Abstract: | Nanoscale silica were prepared by the Sol-Gel method with CH3CH2OH and Si(OC2H5)4.Under different heat-treatment temperatures, the phase and microstructure of the nanoscale silica were studied with FT-IR,XRD and TEM.It is resulted that sol-concentration and its pH value are the important factor which determine the gelation time.Nanoscale-SiO2 the average diameter is about 20nm and which have acceptable thermal stability were obtained with 600℃ sintering. |
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| Keywords: | Sol Gel method nanoscale silica Si(OC 2H 5) 4 |
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